Does someone know my IP address?

black_dog -  
quentin2121 Posted messages 9063 Registration date   Status Membre Last intervention   -
Hello,

I agreed to give my IP address to someone. In fact, I asked him if he could, and he asked me to click on a link (Grabify site, which is made for that, to track IP addresses). Apparently, he has the public IP address, but he can see the remaining battery percentage, which suggests he might know other things, I think...

Can he access my photos, for example?

Thank you and have a nice day.

3 réponses

quentin2121 Posted messages 9063 Registration date   Status Membre Last intervention   Ambassadeur 1 311
 
Hello,
what is this Gamblify site? It's a gaming site, with an IP address you can't access on a PC ... we can geolocate roughly, and still within a few dozen kilometers!

--

“Take your chance, hold onto your happiness and move towards your risk. By looking at you, they will get used to it.” René Char
6
black_dog
 
My bad, it's Grabify... :)

And how can I explain that it managed to know the battery percentage of my smartphone? Essentially, it's because the site allows it, but does that also mean it can know other things?
0
Reivax962 Posted messages 3742 Status Membre 1 011
 
Hello,

An IP address alone does not allow for knowing the battery level. However, some JavaScript APIs can do that.

Moreover, Grabify is not just a site that allows you to retrieve an IP: it is mainly a URL shortener, which allows you to hide a web page under a more user-friendly address. And incidentally, it does allow you to see who accessed that address.

Combine the two: what was the site hidden behind Grabify? Probably a web page that exploited a JavaScript script to gather information about your phone.
This type of site could also retrieve your geolocation and some other data.

But don't worry: it does not have access to your phone/computer. Only to some visible data at the moment you click on that link, data provided by the browser, data that any website could obtain. Not your files...

Xavier
4
Reivax962 Posted messages 3742 Status Membre 1 011
 
My bad, Grabify also takes advantage of logging things on its side, without the underlying page having to handle it. But it comes to the same thing, only the data provided by the browser can be read.
You can find the list of this data on their site:
https://grabify.link/faq/features

Xavier
2
black_dog
 
Thank you for this answer.

In other words, can he access the history, for example?

But well, to be on a hotspot in a student residence, I thought for a moment that he could have access to all the computers/smartphones connected to the hotspot... By the way, I was finally specifying that it was the public IP address, do you think he could have had the local IP address?
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Reivax962 Posted messages 3742 Status Membre 1 011 > black_dog
 
The history, no: just the referring page (that’s the "Referring URL" in the provided list).

As for the local IP, I'm surprised; I didn't think it was public information. They do indicate that they retrieve it, and indeed with a little research, you can find sites like http://www.mon-ip.com/adresse-ip-locale.php that are able to find it...
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quentin2121 Posted messages 9063 Registration date   Status Membre Last intervention   1 311 > Reivax962 Posted messages 3742 Status Membre
 
With the local IP: 192.168.8.1 for example at SFR, it doesn't offer much possibility of being discovered, except for a PC connected to the local network! It's limited in range! The public IP is not very precise... except for authorities who can accurately geolocate a person!
0
black_dog
 
I'm not familiar enough to know what exactly a "public data" is (well, I understand), but clearly I imagine that as soon as I click on the grabify link he gives me, I allow him to access information...

The site you posted that provides the local IP allows you to obtain your own address, not that of your neighbor, so it shouldn't be too much of a problem... (although maybe that's not what you meant)
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